Based on info in the link below, if the serial number starts QB it's likely a January 1988 frame, which supports LeonL's suggestion that it's a later colour scheme on the previous year frame.
I don't know if the other numbers denote a model. I haven't seen anywhere that they might but someone else will know better.
I should be getting a late 1980s Koga Miyata Ridgerunner frame myself so will report back when I get the serial number.
I don't know if the other numbers denote a model. I haven't seen anywhere that they might but someone else will know better.
I should be getting a late 1980s Koga Miyata Ridgerunner frame myself so will report back when I get the serial number.
Asian Serial Number Guide - Bike Forums
Classic & Vintage - Asian Serial Number Guide - Many of you will be aware of my penchant for collecting and analyzing serial numbers. This guide compiles the results of a decade of data collection of pre-1990 Asian serial numbers. The guide is not necessarily comprehensive, as it only represents...
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